Automatic scissors



Nov. 21, 1939. j` BRANCA-ro E1- AL 2,181,009

AUTOMATIC sclssoR-s Filed March 19, 1958 s' f f7 -w lll j y/X//j/ F@ l if2 7 JL/: M 5,25 /7 /f r ,7] l a Q bl @ikv/f Patented Nov. 2l, 1939-PATENT 'OFFICE AUTOMATIC scls'sons Joe Brancato and Dominick Scalese,

Application Barnesboro, Pa.

March 19, 1938, Serial No. 196,99@

i claims. (ci. :io-22s) This invention relates to automatic scissors,and it is an object of the invention to provide a tool of this kindcomprising two .cutting blades supported for relative swinging movementone toward the other together with power driven means for imparting thedesired movement to the swinging blades.

It is also an object of the invention to provide a tool of this kindwherein the swinging blade after completing its cutting movement isinitially moved in reverse by the power driven mechanism but furtherreturned to its open position through the instrumentality of a spring,said last named movement independently of the power driven mechanismfacilitating the use of the scissors.

Another object of the invention is to provide automatic scissorsconstructed, assembled and operated in a manner permitting the scissorsto be put to the same uses as the conventional type of hand operatedscissors.

The invention consists in the details of construction and in thecombination and arrangement of the several parts of our improvedautomatic scissors whereby certain important advantages are attained andthe device rendered simpler, less expensive and otherwise moreconvenient and advantageous for use, as will be hereinafter more fullyset forth.

The novel features of our invention will hereinafter be denitelyclaimed.

In order that our invention may be the better understood, we will nowproceed to describe the same with reference tothe accompanying drawing,wherein:

Figure 1 is a view in top plan of automatic scissors constructed inaccordance with an embodiment of our invention;

Figure 2 is a view in side elevation of the tool as illustrated inFigure 1 with portions in section; -Figure 3 is a view similar to Figure1 with theportions broken away; Figure 4 is a sectional view takensubstantially on the line 4-4-'of Figure 2.

As disclosed in the accompanying drawing, H

denotes a hollow head having a removable front y plate I and a removabletop late 2. The'top plate 2 is held in applied position by the removablescrews 3- or theilike while the front plate I is maintained in positionby the screws 4 which extend through the frontiplatel and have operativeengagement withl a bar 5 interposed between and connecting the sidewalls of the- -head H at the upper portion thereof and adjacent thefront edges of `said side walls. These plates I cand 2 are removable tofacilitate the assemblyof the structure and to allow access thereto forthe purpose of lubrication, repair or as may otherwise be desired.

The back wall of the head H has extending out- Wardly therefrom abearing I for a shaft 8. The 5 outer end portion of this shaft 8 is indriven connection with a flexible shaft 9 adapted to be coupled to asuitable source of power. This exible shaft is of a conventional typeand is extended through a flexible conduit I0 as .is well 10 known. Theshaft 8 extends Within the head I-I and the portion of the shaft withinthe head has fixed thereto for rotation therewith a disk II carrying anoutstanding crank pin I 2 carrying an anti-'friction roller I4. L 15overlying the bottom `wall I5 of the head I-I is the rear end portion ofa scissors blade A. This blade A is held to the bottom wall I5 by thethreaded members I6 disposed through the bottom wall I5 and engaging therear or overlying 20 end portion of the blade A. Associated with thisblade A is a second blade B pivotally connected, as at I1, with theblade A andmore particularly the portion.of said blade overlying thebottom Walll I5 of the head H. The blade B is free 13o-25 swing towardor from the blade A whereby said blade will cooperate to eii'ect thedesired cutting action. The blade B has a portion I8 extendingrearwardly of the head H beyond the pivot and secured to this portion I8by rivets I9 or 30 the like is a plate 2li. This plate 20 has extendingupwardly therefrom a pair of arms 2| and 22 spaced apart in a directiontransversely of 'the adjacent portion of the blade B. These arms 2| and22 are laterally disposed with respect to 35 the outer face of the bladeB and longitudinally curved with thecurvature. of the inner arm 2|v on aradius different from the radius of the outer rotated the pin I 2, ormore particularly the roller or sleeve I4 carried thereby, will contactwith the arm 2| and positively swing the blade B to- 45 ward and intocuttingrelatio'n with respect to the blade A. This action'will bemaintained until the pin I2 reaches substantially its high point and asthe pin I2 moves away frointhe arm 2| a retractile member or spring 23operates 50 to impart outward swinging movement to the blade B. Thisspring 23 is anchored at one end, asrat 24,'to the arm 2| and at itsopposite end portion is anchored, as at 25, to a sidewall of the head.

If, for any reason, the blade B should refuse to act under the tensionof the spring 23 as by undue resistance being oifered by work caughtbetween the overlying blades A and B at the conclusion of a cuttingaction by the blade B, the

arm 22 will be in a positon to allow the pin l2 or its sleeve or rollerI4 to have contact therewith and thus provide positive means through.the action of the disk Il for causing the blade in accordance with ourinvention is particularly.

well adapted for use by reason of the convenience and facility withwhich it may be assembled and operated, and it will also be obvious thatour invention is susceptible of some change and modification withoutdeparting from the principles and spirit thereof and for this reason wedo not wish to be understoodv as limitingourselves to the precisearrangement and formation of the several parts herein shown in carryingout our invention in practice except as hereinafter claimed.

We claim:

1. Mechanically operated scissors comprising a hollow head, a rotatableshaft carried by the head and extending therein, means for rotating theshaft, a disk carried by. the shaft within the head, a pair of pivotedblades having end portions extending within the head, means foranchoring one of the blades to the head, outstanding spaced,

arms carried by the end portion of the second blade within the head,said arm being laterally disposed with respect tothe outer face of theblade, a part carried by the disk extending between the arms, meanswithin the head for normally urging one of the arms into'engagement withthe part carried by the disk for moving the second blade in onedirection, said part carried by the disk contacting with the second armupon failure of said means to function.

2. Mechanically operated scissors comprising a hollow head, a rotatableshaft carried by the head and extending therein, means for rotating theshaft, a 'disk carried by the shaft within the head, a pair of pivotedblades having end portions extending within the head, means foranchoring one of the blades to the head, outstanding spaced arms carriedby the end portion of the second blade within the head, said arm beinglaterally disposed with respect to the outer face of the blade, a partcarried by the disk extending between the arms, means within the headforA normally urging one of the arms into engagement with the partcarried by the disk for moving the second blade lin one direction, saidpart carried by the disk contacting with the second arm upon failure ofsaid means to function, said arms being so constructed and arranged toprovide an increasing space therebetween from the blade to the outerends of said arms.

3. Mechanically operated scissors comprising a hollow head, a rotatableshaft carried by the head andextending therein, means for rotating theshaft, a disk carried by the shaft within the head, a pair of pivotedblades having end portions extending within the head, means for anchoring one of the blades to the head, outstanding spaced arms carriedby the end portion of the second blade within the head, said arm beinglaterally disposed with respect to the outer face of the blade, a partcarried by the disk extending between the arms, and a retractible memberoperatively engaged with one of the arms to normally maintain the arm incontact with the part of the disk for moving the second blade in onedirection, said part contacting with the second arm to move the bladewhen the spring fails to function.

4. Mechanically operated scissors comprising a hollow head including axed bottom plate and a removable front plate, a rotatable disk supportedwithin the head, a crank pin carried by the disk, a pair of pivotedblades having end portions ext nding within the head, means for.

anchoring o e of the blades to the bottom plate of. the head, the secondblade having outstanding spaced arms extending laterally from the outerface thereof and between which the crank pin of the diskV extends, meansfor normally maintaining one of said arms in contact with the crank pinand for imposing movement in one direction on the blade, the crank pincontacting with the second arm to swing the blade when the means becomesineffective.

JOE BRANCATO.

DOMINICK SCALESE.

